Have you ever wanted to change the extension of hundreds of files at once? Or have you ever needed to change an email address on 50 different pages of a website? Then MassReplaceIt is the tool for you.

MassReplaceIt takes a list of files, searches either their contents or their filenames, and replaces every occurrence of your search term with something else. Not only that, but it provides numerous features and options to give you control over the changes you want to make.

For example, you can optionally create a mask to filter which files are searched. Say you have a folder with thousands of documents inside it, but you only want to search html files modified in the last week. MassReplaceIt makes it easy to do this.

Another useful feature is the ability to save queries, which contain information about your search. In this way, you only need to set up a complicated search once, ready to be used again in the future by simply selecting the query from a menu.

As well as several other useful features, MassReplaceIt gives you enormous freedom over how you do your search. You can search filenames or contents, the entire file or just the beginning or end. You can do a case sensitive search, or search for whole words only. And with a wealth of options about how the program behaves, for example whether it confirms file changes, you can customize it to behave exactly how you want it to.

However, not only is MassReplaceIt powerful, but it was designed to be easy to use. The interface is intuitive, with the advanced features not obscuring your ability to do a simple search. And in the event that you don't fully understand a feature, full documentation is available from the Help menu.

Furthermore, MassReplaceIt is completely free, you don't have to pay a cent. Download it now.